CGAL::Classification::Feature::Vertical_dispersion< GeomTraits, PointRange, PointMap > Class Template Reference

#include <CGAL/Classification/Feature/Vertical_dispersion.h>

Inherits from

CGAL::Classification::Feature_base.

Definition

Feature based on local vertical dispersion of points.

Urban scenes can often be decomposed as a set of 2D regions with different heights. While these heights are usually piecewise constant or piecewise linear, on some specific parts of the scene such as vegetation, they can become extremely unstable. This feature quantifies the vertical dispersion of the points on a local Z-cylinder around the points.

Its default name is "vertical_dispersion".

Template Parameters

GeomTraits	model of CGAL Kernel.
PointRange	model of ConstRange. Its iterator type is RandomAccessIterator and its value type is the key type of PointMap.
PointMap	model of ReadablePropertyMap whose key type is the value type of the iterator of PointRange and value type is GeomTraits::Point_3.

Public Member Functions
	Vertical_dispersion (const PointRange &input, PointMap point_map, const Grid &grid, float radius_neighbors=-1.)
	Constructs the feature. More...
Public Member Functions inherited from CGAL::Classification::Feature_base
const std::string &	name () const
	Returns the name of the feature (initialized to abstract_feature for Feature_base).
void	set_name (const std::string &name)
	Changes the name of the feature.
virtual float	value (std::size_t index)=0
	Returns the value taken by the feature for at the item for the item at position index. More...

Constructor & Destructor Documentation

Vertical_dispersion()

template<typename GeomTraits , typename PointRange , typename PointMap >

CGAL::Classification::Feature::Vertical_dispersion< GeomTraits, PointRange, PointMap >::Vertical_dispersion	(	const PointRange &	input,
		PointMap	point_map,
		const Grid &	grid,
		float	radius_neighbors = -1.
	)

Constructs the feature.

Parameters

input	point range.
point_map	property map to access the input points.
grid	precomputed Planimetric_grid.
radius_neighbors	radius of local neighborhoods.